Radiobiology And Radiation Safety

Question 1

Radiobiology

Answer 1

The study of the effects of radiation on living organisms

Question 2

Electromagnetic radiation

Answer 2

Combination of electric magnetic fields that travel together
Wave and particulate properties
Non-ionizing and ionizing forms

Question 3

Types of ionizing radiatio

Answer 3

Alpha particles
Beta particles
X-rays and gamma rays

Question 4

Alpha particles

Answer 4

Helium nucleus

Large, collide with matter and lose energy quickly

Question 5

Beta particles

Answer 5

Electrons emitted form radioactive elements

Question 6

X-rays and gamma rays

Answer 6

Identical except X-rays produced outside the nucleus

Question 7

Stochastic radiation effect on organism

Answer 7

Severity independent of dose
Probability increases with doe
No threshold (all or none phenomenon)

Question 8

Deterministic radiation effect on organisms

Answer 8

Severity increase with dose

Threshold

Question 9

ALARA

Answer 9

As low as reasonable achievable

Question 10

Intensity of X-Ray energy is inversely related to

Answer 10

Distance from point source squared

Question 11

Stay at leas __ feet away from source

Answer 11

6

Question 12

Lead clothing protects from

Answer 12

Scatter not primary beam

5 mm Pb equivalent

Question 13

NCRP/ state rules

Answer 13

Individuals under 18 are not allowed in radiology suite

NRCP limits